Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Wedge-faceted nonlinear crystal for harmonic generation

A nonlinear crystal and harmonic technology, applied in nonlinear optics, laser parts, instruments, etc., can solve nonlinear crystal space walk, limit harmonic conversion efficiency, laser beam quality, coating and crystal material block damage And other issues

Inactive Publication Date: 2013-02-06
ELECTRO SCI IND INC
View PDF1 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To obtain high conversion efficiencies for nonlinear harmonic conversion in extracavity configurations, small spot sizes are used, but this is limited by two main factors
The first limiting factor is damage to the anti-reflection (AR) coating and bulk crystal material caused by high peak power levels
The second limiting factor is the spatial walk-off phenomenon introduced by the small spot size in nonlinear crystals, which limits the harmonic conversion efficiency and laser beam quality
However, it is more difficult to position the cylindrical lens in the cavity to form an elliptical beam in a nonlinear crystal and maintain a stable cavity and provide an elliptical cavity mode

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wedge-faceted nonlinear crystal for harmonic generation
  • Wedge-faceted nonlinear crystal for harmonic generation
  • Wedge-faceted nonlinear crystal for harmonic generation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] figure 2 is a prior art diagram of a substantially rectangular birefringent crystal frequency conversion medium or nonlinear crystal 30 used in generating laser output 32 by the sum or difference of the frequencies of input laser beams 34 and 36 . The nonlinear crystal 30 has an entrance face 38 covered by an antireflective (AR) coating 40 , a width 42 between 3 mm and 5 mm, and a length 44 of about 10 mm.

[0021] Nonlinear crystal materials used in sum frequency generation and difference frequency generation have a refractive index n, which is typically between 1.6 and 2.0.

[0022] The following description is given as an example of the sum frequency generation of a 355nm UV light output 32 by mixing an infrared (IR) beam 34 of a 1064nm Nd:YAG laser with a frequency doubled 532nm green beam 36 .

[0023] Critical phase matching is a technique used in nonlinear crystal 30 to obtain phase matching of nonlinear processes. Alternating input beams 34 and 36 are aligned...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Lasers and laser systems generate different wavelengths by nonlinear sum or difference frequency conversion. A wedge-faceted nonlinear crystal (30') compensates for the spatial walk-off phenomenon associated with critical phase matching of a nonlinear crystal in the production of harmonic laser output at peak power.

Description

[0001] 2011 ELECTOR SCIENTIFIC INDUSTRY CO., LTD. ( 2010 Electro Scientific Industries, Inc.) Portions of the disclosure of this patent document contain copyrighted material. The copyright owner has no objection to the facsimile reproduction by anyone of this patent document or the patent disclosure when it appears in the Patent and Trademark Office patent file or records, but otherwise reserves all copyright rights. 37 CFR §1.71(d). technical field [0002] This invention relates to lasers and laser systems for generating different wavelengths by nonlinear sum-frequency or difference-frequency conversion, and more particularly to compensation associated with critical phase matching of nonlinear crystals in the process of generating harmonic laser output at peak power The spatial walk-off phenomenon. Background technique [0003] Laser wavelength converters are widely used in many industrial applications. For example, laser systems that perform wavelength conversion to...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/102H01S3/108
CPCH01S3/0092G02F1/3534G02F1/3544H01S3/102H01S3/108
Inventor 彭晓原王海文
Owner ELECTRO SCI IND INC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com